颜色不变 - 蟒蛇图形

Question

我试图重现这种效果。

import graphics
from graphics import color_rgb
import random
window= graphics.GraphWin("x", 600, 400)
stripes = input("How many stripes should be on the flag")
stripes = int(stripes)
count = 0
count = int(count)
P1=graphics.Point(0,0) #left corner - anchor point
for x in range(stripes): #loop for number of stripes
    col= random.randint(1,255)
    stepdim = 400/stripes #size of divisions
    stepdim = int(stepdim)
    shrink = count*stepdim
    shrink = int(shrink)
    stepdim = stepdim*10 #enlarge to an increment below the last
    stepdim = stepdim-shrink
    stepdim = int(stepdim)
    P2=graphics.Point(600,stepdim) #bottom right corner - ever shrinking
    outsiderec=graphics.Rectangle(P1,P2) #
    outsiderec.setFill(color_rgb(100, col, 0))
    outsiderec.draw(window)
    count= count + 1
    count= int(count)
window.getMouse()
window.close()

我反而接受一种平面颜色。 我认为问题出在我的rand（int）中。我真的不知道它的来龙去脉。它不是不止一次运行吗？

Answer 1

使用您的代码作为基础我试图重现预期的结果。

import graphics
from graphics import color_rgb
import random

window= graphics.GraphWin("x", 600, 400)
stripes = input("How many stripes should be on the flag")
stripes = int(stripes)
#count = 0
#count = int(count)
#P1=graphics.Point(0,0) #left corner - anchor point
stepdim = 400/stripes #size of divisions
for x in range(stripes): #loop for number of stripes
    #col= random.randint(1,255)
    #stepdim = int(stepdim)
    #shrink = count*stepdim
    #shrink = int(shrink)
    #stepdim = stepdim*10 #enlarge to an increment below the last
    #stepdim = stepdim-shrink
    #stepdim = int(stepdim)
    #P2=graphics.Point(600,stepdim) #bottom right corner - ever shrinking
    P1=graphics.Point(0, stepdim * x) #left corner - anchor point
    P2=graphics.Point(600,stepdim * (x + 1)) #bottom right corner - ever shrinking
    outsiderec=graphics.Rectangle(P1,P2)
    #outsiderec.setFill(color_rgb(100, col, 0))
    red = random.randint(1, 255)
    green = random.randint(1, 255)
    blue = random.randint(1, 255)
    outsiderec.setFill(color_rgb(red, green, blue))
    outsiderec.draw(window)
    #count= count + 1
    #count= int(count)
window.getMouse()
window.close()

我有：

• 评论了所有不需要的陈述
• 将stepdim = 400/stripes从循环内部移到外部，因为您不需要为每个循环计算相同的值
• 将P1=graphics.Point(0,0)移动到循环内部稍作修改，只是指向条纹的左上角
• 修改了P2=graphics.Point(600,stepdim)以指向条纹的右下角
• 为三种颜色成分添加了随机计算red = random.randint(1, 255)，green = random.randint(1, 255)和blue = random.randint(1, 255)

观察：

我改变了条纹的方式。修改后的版本不是为每个循环绘制缩小版本，而是在连续位置绘制固定大小的条带。